﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.Web.Syndication;

// The Basic Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234237

namespace Program_Async
{
    /// <summary>
    /// A basic page that provides characteristics common to most applications.
    /// </summary>
    public sealed partial class FeedPage : Program_Async.Common.LayoutAwarePage
    {
        public FeedPage()
        {
            this.InitializeComponent();
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            InitializeAsync();
            pageTitle.Text = "hi";
            

        }

        private async Task InitializeAsync()
        {
            feedOutput.Text = await GetTitleFeedAsync();
        }

       

        private async Task<String> GetTitleFeedAsync()
        {
            Windows.Web.Syndication.SyndicationClient client = new SyndicationClient();

            // Force the SyndicationClient to download the information.
            client.BypassCacheOnRetrieve = true;

            Uri feedUri
                = new Uri("http://windowsteamblog.com/windows/b/windowsexperience/atom.aspx");
            String result = String.Empty;
            try
            {
                // Call SyndicationClient RetrieveFeedAsync to download the list of blog posts.
                SyndicationFeed feed = await client.RetrieveFeedAsync(feedUri);

                // The rest of this method executes after await RetrieveFeedAsync completes.
                result = feed.Title.Text + Environment.NewLine;

                foreach (SyndicationItem item in feed.Items.Take(10))
                {
                    result += item.Title.Text + ", " +
                                     item.PublishedDate.ToString() + Environment.NewLine;
                }
            }
            catch (Exception ex)
            {
                // Log Error.
                result =
                    "I'm sorry, but I couldn't load the page," +
                    " possibly due to network problems." +
                    "Here's the error message I received: "
                    + ex.ToString();
            }
            return result;
        }

        

        /// <summary>
        /// Preserves state associated with this page in case the application is suspended or the
        /// page is discarded from the navigation cache.  Values must conform to the serialization
        /// requirements of <see cref="SuspensionManager.SessionState"/>.
        /// </summary>
        /// <param name="pageState">An empty dictionary to be populated with serializable state.</param>
        protected override void SaveState(Dictionary<String, Object> pageState)
        {
        }

        private void feedOutput_Tapped(object sender, TappedRoutedEventArgs e)
        {
            //our code goes here
        }

        private void Grid_Tapped_1(object sender, TappedRoutedEventArgs e)
        {

        }
    }
}
